Update telegram unit tests to use 'create_connection_without_db'

[amoghrajesh]

Ok it didn't work for some reason the other day!

Works now:

collecting ... collected 17 items / 3 deselected / 14 selected
run-last-failure: rerun previous 14 failures

unit/telegram/hooks/test_telegram.py::TestTelegramHook::test_should_use_default_connection 
unit/telegram/hooks/test_telegram.py::TestTelegramHook::test_should_raise_exception_if_conn_id_doesnt_contain_token 
unit/telegram/hooks/test_telegram.py::TestTelegramHook::test_should_raise_exception_if_chat_id_is_not_provided_anywhere 
unit/telegram/hooks/test_telegram.py::TestTelegramHook::test_should_raise_exception_if_message_text_is_not_provided 
unit/telegram/hooks/test_telegram.py::TestTelegramHook::test_should_send_message_if_all_parameters_are_correctly_provided 
unit/telegram/hooks/test_telegram.py::TestTelegramHook::test_should_send_message_if_chat_id_is_provided_through_constructor 
unit/telegram/hooks/test_telegram.py::TestTelegramHook::test_should_send_message_if_chat_id_is_provided_in_connection 
unit/telegram/hooks/test_telegram.py::TestTelegramHook::test_should_retry_when_any_telegram_error_is_encountered 
unit/telegram/hooks/test_telegram.py::TestTelegramHook::test_should_raise_exception_if_chat_id_is_not_provided_anywhere_when_sending_file 
unit/telegram/hooks/test_telegram.py::TestTelegramHook::test_should_raise_exception_if_file_path_is_not_provided_when_sending_file 
unit/telegram/hooks/test_telegram.py::TestTelegramHook::test_should_send_file_if_all_parameters_are_correctly_provided 
unit/telegram/hooks/test_telegram.py::TestTelegramHook::test_should_send_file_if_chat_id_is_provided_through_constructor 
unit/telegram/hooks/test_telegram.py::TestTelegramHook::test_should_send_file_if_chat_id_is_provided_in_connection 
unit/telegram/hooks/test_telegram.py::TestTelegramHook::test_should_retry_on_telegram_error_when_sending_file 

================= 14 passed, 3 deselected, 1 warning in 9.88s ==================

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[gopidesupavan]

have updated this #52028

[amoghrajesh]

Closing my PR in favour of #52069